@Article{icces.2009.010.077,
AUTHOR = {Chih-Chang  Chang, Ruey-Jen  Yang},
TITLE = {Chaotic Mixing in a Microfluidic Device},
JOURNAL = {The International Conference on Computational \& Experimental Engineering and Sciences},
VOLUME = {10},
YEAR = {2009},
NUMBER = {2},
PAGES = {77--86},
URL = {http://www.techscience.com/icces/v10n2/31636},
ISSN = {1933-2815},
ABSTRACT = {This paper presents a theoretical investigation into chaotic mixing in low Reynolds number electro-osmotic flows. In this mixing system, the primary flow is the plug-like electro-osmotic flow contributed by the permanent surface charge at the wall, and the secondary electro-osmotic flows (or electro-osmotic recirculating rolls) contributed by the field-effect-induced surface charge act as the perturbed flow. By time-periodic switching two different secondary electro-osmotic flows, it makes streamlines to cross at successive intervals and results in chaotic mixing. Dynamic system techniques such as Poincaré map and finite-time Lyapunov exponent analyses are employed to describe the behaviors of particle motion in this mixing system. Finally, the optimum operating condition (e.g. amplitude and time-switching period) for the mixing is identified.},
DOI = {10.3970/icces.2009.010.077}
}